Brazing.



WILLIAM E. GLEISSNER, OF ABILENE, KANSAS.

BBAZING.

Specification of Letters Patent.

Patented March 24, 1908.

Application filed February 5, 1907. Serial No. 355,953.

To all whom it may concern:

Be itknown that I, WILLIAM E. GLEIss- NER, cltlzen of the United States, residing at Abilene, in the county of Dickinson and State of Kansas, have invented new and useful Improvements in Brazing, of which the following is a specification.

My invention pertains to brazing; and it consists in the peculiar and advantageous process, hereinafter described and claimed, through the medium of which metal castings may be expeditiously and effectually brazed.

The practice of my process involves the use of the following compositions and separate ingredients, viz: No. 1. A saturated solution of borax, rain water or other chemically pure water, and about 5% of wood alcohol or other solvent suitable to the purpose. No. 2. A compound consisting of 66 37 of iron, preferably refined malleable iron, reduced to a fine powder, and of refined powdered borax. No. 3. Powdered borax of the kind that is known commercially as ground-glass borax or borax glass, it being so denominated because its crystals precedent to comminution closely resemble white glass and are almost as hard. No. 4. Spelter, preferably a fine quality of brass spelter.

The compositions and separate ingredients enumerated are separately packed and placed upon the market, and are not brought together until my novel process is practiced as hereinafter set forth in detail. I would have it understood, however, that I prefer to pack the packages containing the said compositions and separate ingredients in one box or carton and to sell the whole as one article of commodity.

In practicing my process and brazing a casting, it is first essential to thoroughly clean the casting in and adjacent to the break and subject the same to the abrasive action of a wire brush or other suitable device, this in order to assure the removal of all rust, grease, paint and other foreign substance from in and about the break. With this done, the before described No. 1'solution is commingled with the before described No. 2 compound until the mixture is of about the consistency of thick cream, when said mixture is applied profusely to the opposed portions of the break of a casting. The said opposed portions'of the casting are then securely fastened or clamped together, after which a good coat of the mixture just deis brought to an even, bright red heat.

scribed is put on the casting entirely around the joint; care being taken to spread said mixture about a quarter of an inch on either side of the line of fracture. The mixture is now dried by the application of heat or by exposing it to the atmosphere, and when it is dry or set, the before described No. 3 ingredient is applied entirely around the joint and adjacent thereto.

I have ascertained by experiments that applying the described mixture of about the consistency of thick cream to the casting and permitting the mixture to thoroughly dry and then applying the Number 3 ingredient or powdered borax to the casting precedent to heating the casting conduces materially to the production of a strong and durable connection of the parts of the casting; also, that the use of two parts of iron filings to one part of borax adds to. the strength of the connection between the two parts of the casting.

After the application of the mixture and No. 3 ingredient to the casting in the manner detailed in the foregoing, the casting is placed in a fire in such position that thebreak or fracture is within convenient reach for the i application of No. 3 ingredient or borax and No. 4 ingredient or spelter, and the casting At this point it should be stated that it is never advisable to raise cast-iron to a white heat. When the casting is brought to an even, bright red heat as stated, the No. 3 ingredient or borax is first profusely applied to the casting and immediately afterward the No.4 ingredient or spelter is applied. At the proper heat, the No. 4 ingredient or s elter will become fluid and will disappear a most instantly into the joint. After the No. 4 ingredient or spelter is applied as stated, the casting is permitted to cool sufliciently to allow the brass to set, but care should be taken to avoid chilling of the casting.

:When desirable a brass rod or wire may for the sake of convenience be used in lieu of the No. 4 ingredient or spelter without involving departure from the scope of my, invention as claimed.

Having described my invention, what I claim and desire to secure by Letters-Patent,

The herein described process of brazing a broken casting, which consists in com mingling a solution of borax, Water and solvent with a compound consisting of two thirds of powdered iron and one third of refined powdered borax .until the mixture is of about the consistency of thick cream, then applying the mixture to the break While the casting is cold, then drying. the mixture, then applying powdered borax around the joint and bringing the casting to an even bright red heat and applying 10 powdered borax and spelter inv the order my hand in presence of two subscribing Witness es.

WILLIAM E. GLEISSNER.

Witnesses O. A. MOORE, M. NICCUM. 

